Vehicle-spring.



No. 746,941. v PATENTEQ DEG. 15, 1903. 3. Mom 5; T. G. STEVENS; VEHICLE SPRING.

APPLICATION FILED SEPT. 16, 1902.

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No- 746,941. 7 PATENTED BBQ 15, 1903.

J. PACER & T; G. STEVEN-S VEHICLE SPRING.

APPLIGATION FILED SEPT. 16, 1902.

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UNITED STATES Patented December 15, 1903.

PATENT OFFICE.

JAMES FACERAND THOMAS GEORGE STEVENS, OF-BEDFORD, ENGLAND; SAID FAOER ASSIGNORTO SAID STEVENS.

VEHICLE-SPRING.

SPECIFICATION forming part of Letters Patent No. 746,941, dated December 15, 1903.

Application filed September 16, 1902. Serial No. 123,624. (No model.)

To all whom it may concern:

Be it known that we, JAMES FAOER and THOMAS GEORGE STEVENS, subjects of the King of Great Britain and Ireland, residing at Pavenham, Bedford, England, have invented certain new and useful Improvements in or Connected with Springs of Vehicles; and we do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same.

This invention forimproved mechanism for producing unison of action in the springs of vehicles has for its object to so control the movements of the vehicle-body on its springs that in Whatever manner the load may be distributed the whole of the springs of the vehicle shall act in unison in the support of such load; and it consists, essentially, in con necting the body of the vehicle with its supporting-axle'or axle-bearing by rocking levers fixed on or formed integral with a common connecting-shaft working in a suitable bearing or bearings secured or connected to the body of the vehicle and so arranged that on a load being imposed on one of, say, two opposite springs its deflection causes the rocking levers to rotate and both springs tobe de flected in unison. By these means-pitching and rocking of vehicles are greatly diminished and very much lighter, and consequently more sensitive, springs can be employed than is possible with vehicles provided with springs acting independently of each other. 7

In the accompanying drawings, Figure l is a side elevation of one arrangementof springs and connections constructed according to this invention, and Fig. 2 is a rear end elevation of the same. Figs. 3 and 4 are rear end elevations of modified arrangements or designs.

Referring to Figs. 1 and 2 of the drawings, two rocking levers a a of equal length are rigidly secured to or integral with the connecting-shaft b, working in bearings c 0, secured to the body (1 of the vehicle, and are also pivotally connected by pins 6 e to two equal spring-links f f themselves connected to lugs mounted on the axle g, as shown. Springs h h are secured to the body 01 and axle g in the usual manner. The object of the employment of'the spring-links ff is to reduce the communication of shocks to the In the arrangement shown in Fig. 3 the bearing-blocks o of the rocking shaft 17 are pivoted to a cross spring 10, secured to the body 01 of the vehicle, as shown.

Fig. 4 shows the rocking shaft 1), carried by a single bearing-block p, pivoted to a baseblock a", fixed to the center of the bottom of the bodyd of the vehicle.

What we claim, and desire to secure by Letters Patent, is

1. A means for producing unison of action in the springs of two-wheeled vehicles comprising a cross-spring secured to the bottom of the body of the vehicle and carrying bearing-blocks at its extremities, coupled rocking levers of equal length connected together by a shaft working in the said "bearing-blocks, links having oneend pivotally connected to the ends of the said levers and the other end to the axle, and springssecured to the axle and the body of the vehicle substantially as described.

2. A means for producing unison of action in'the springs of two-wheeled vehicles comprising a pivoted bearing-block secured to the 

